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Hormones
Chemical substances produced in our bodies that act as messengers, communicating between our different cells and organs. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
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Clone
A genetically identical copy of a piece of DNA, or an entire organism. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Bacteria
Single-celled microorganisms, which do not have a nucleus, and reproduce by simple cell division. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Pollen
Tiny particles produced by male plants that contain the male reproductive cells enclosed in a protective shell. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Stamen
The male reproductive organ of a flower. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
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Asexual reproduction
Reproduction involving just one parent, without the mixing of genetic material with another individual. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Virus
A very small infectious agent that can reproduce only inside other cells. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Artificial propagation
Producing new plants by human intervention and artificial methods. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
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DNA replication
An essential stage in cell division and reproduction, allowing genetic material to be copied into a new cell. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Carpel
The female part of a flowering plant, consisting of the ovaries, ovules, a stalk-like tube called the style, and its sticky surface called the stigma. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...
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What is a Fish?
Fish are by far the most diverse of all the vertebrate groups. Discover the shared characteristics that make a fish, a fish. Biology - Animal Kingdom - Learning Points. Fish are aquatic vertebrates. Jellyfish, starfish and other marine...
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Sexual Selection
Learn how sexual selection governs mate choice, but also drives the evolution of species. Examples of physical and behavioural, intra and inter species sexual selection. Biology - Adaptation And Evolution - Learning Points. Selecting a...
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Echidnas
An introduction to the echidna - one of the world's few egg-laying mammals. Find out what it looks like, where it lives, and what it eats. Biology - Animal Kingdom - Learning Points. Egg-laying mammals are called monotremes. The echidna...
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Poison Arrow Frog
This brightly-coloured frog lays its eggs on the ground and must climb high into the rainforest canopy to transport its young to a watery nursery. How? Biology - Animal Kingdom - Learning Points. Poison arrow frogs have poisonous skin,...
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Red-Eyed Tree Frog
Discover why the precarious choice of spawning location means this species' young must make a life-or-death decision as soon as they hatch. Biology - Animal Kingdom - Learning Points. The South American red-eyed tree frog lives in rivers...
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Southern Reef Squid
Visit the shallow spawning grounds of the colour-changing reef squid. Biology - Animal Kingdom - Learning Points. The southern reef squid is one of around 800 species of cephalopod. Cephalopods are the most intelligent of all...
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Duck-Billed Platypus
An introduction to the duck-billed platypus - one of the world's few egg-laying mammals. Find out what it looks like, where it lives, and what it eats. Biology - Animal Kingdom - Learning Points. The duck-billed platypus is native to...
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Gliding Leaf Frog
Frogs like to jump, but meet the species that jumps incredible lengths between trees. Biology - Animal Kingdom - Learning Points. The gliding leaf frog lives in the rainforests of South America. The gliding leaf frog spends much of its...
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Midwife Toads
A look at the nurturing techniques of the male midwife toad, who is charged with looking after the newborn eggs. Biology - Animal Kingdom - Learning Points. Iberian midwife toads mate from September to March each year. During mating...
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Albatross
Did you know that albatrosses spend most of their lives at sea? Biology - Animal Kingdom - Learning Points. Some species of albatross have been known to fly 1000 kilometres in a single day. Albatrosses spend most of their lives at sea,...
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Marbled Salamanders
Why the female marbled salamander must abandon her eggs in order to survive. Biology - Animal Kingdom - Learning Points. Unlike most salamanders, the marbled salamander reproduces entirely on land. The male drops sperm onto the ground...
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Splash Tetras
Discover how splash tetras earned their name from the unusual way they lay their eggs. Biology - Animal Kingdom - Learning Points. Splash tetras lay their eggs on leaves. Male splash tetras find well-protected leaves by leaping out of...
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Deep Sea Angler Fish
The deep sea angler fish lives in deep, dark waters. How does it find food and attract a mate in the dark? Biology - Animal Kingdom - Learning Points. Deep sea anglerfish can swallow prey twice their size. Female anglerfish have...
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Bioaccumulation in Food Chains
Investigating why peregrine falcon populations are threatened by pollution from industry thousands of kilometres away. Biology - Ecosystems - Learning Points. The peregrine falcon lives remotely but is affected by man-made chemicals....